Arched Island Weather Forecast
- 8
- 18
Cloud clearing
- 8
- 23
Mostly sunny
- 10
- 20
Shower or two
- 9
- 16
Showers. Becoming windy
- 7
- 14
Showers. Windy
- 8
- 19
Partly cloudy
- 9
- 21
Partly cloudy
Today 11 Dec South East
Cloud clearing. Winds northwest to southwesterly 15 to 25 km/h tending southeast to southwesterly 15 to 20 km/h in the middle of the day then tending northeast to southeasterly 15 to 25 km/h in the early afternoon. Overnight temperatures falling to between 4 and 9 with daytime temperatures reaching between 17 and 22.
South East Coastal Waters
Tasman Island to South East Cape- Wind
- West to southwesterly 15 to 25 knots becoming variable about 10 knots in the late afternoon then becoming north to northeasterly 10 to 15 knots in the late evening.
- Seas
- 2 to 2.5 metres, decreasing to 1 to 1.5 metres during the morning, then decreasing below 1 metre during the afternoon.
- 1st Swell
- Southwesterly 2.5 to 3 metres.
- Weather
- Partly cloudy.
Arched Island Temperature Statistics View More
December Temperature
Cape Bruny (16km)
Lowest 7 December, 2025
6.9 °CAverage December
13 °CHighest 4 December, 2025
24.6 °C
Climate (2020–Present)
Cape Bruny (16km)
Average Low 2020–2025
9.6 °CAverage 2020–2025
12.4 °CAverage High 2020–2025
16.5 °C